If you're put in the wrong Zahal unit you can lose everything.
I know a 20 year old Lubavitcher from Boston who volunteered for Zahal last year. After just 3 months in the army in a wrong unit, having been exposed to drunken Ukrainian goyim, secular gay soldiers, sluttish girl soldiers, anti-Zionist Bedouin, Circassian and Druze troops, evil nasty anti-Kahane anti-Rebbe leftwing officers, and exposed to alcohol and drugs, he became schizophrenic and completely relinquished the religion and became violently anti-Zionist himself. There are many cases like this.
Indeed, on a Satanic level, that is the very purpose of Zahal: to de-Judaize the population and turn them in to left-wing womanizing atheists! The only reason the Erev Rav who rule Israel are making such a tumult at this time is because they see that it it is their last chance to prevent the Haredim becoming the demographic majority by 2025, by forcing their compulsory mass conscription and mass secularization.
Zahal loathes the Orthodox-only Nahal Haredi and Hesder units, and would love to disband them. TPTB want Haredim to compulsorily join Zahal on their terms ie to be dispersed thought all the units, watered down, exposed to immodest females and secular values etc.
No way will Haredim join Zahal unless it is in to un-mixed Haredi units catering to their needs and preserving their group identity on every level ie Bobover Bombardiers, Sanzer Sappers, Mirrer Minelayers, Vizhnitz Infantry, Ponovez Tankists, Breslov Bridgelayers etc.
The Chillonim would literally rather disband Zahal and see the Medina fall than let Haredim join en masse in their own units and preserve their identity, and also get weapons training that could be used in a coup to storm the Knesset or even the Temple Mount.